Unit 2 Wildlife Protection Discovering useful structures （ppt课件） -2023新人教版（2019）《高中英语》必修第二册.pptx

1、Unit2 Wildlife Protection-The Present-The Present Continuous Passive Continuous Passive VoiceVoicediscovering UsefUl strUctUreTeaching ObjectivesAfter the lesson,we will be able to1.learn about the definition the rules and the basic structures of The Present Continuous Passive Voice;2.master the bas

2、ic usage of it;3.use it to make a speech presentation.The Present Continuous Passive Voice现在进行时现在进行时被动语态被动语态21结构：结构：am/is/are+doing1.We are doing many things to protect the animals.3.We are seeing the Tibetan antelopes next week.2.We are observing the Tibetan antelopes these days.一、一、The Present Con

3、tinuous Tense 现在进行时现在进行时此时此刻此时此刻进行的动作进行的动作表示现阶段在做的动作表示现阶段在做的动作表示即将发生的动作表示即将发生的动作Activity1:Warming-up-Lets review!结构：结构：be+done英语动词动词有两种语态：主动语态主动语态 (the active voice)被动语态被动语态(the passive voice)二、二、The Passive Voice 被动语态被动语态A.主动语态主动语态表示表示主语主语是是动作动作的的执行者执行者。We planted the tree.We planted the tree.B.被动语

4、态被动语态表示表示主语主语是是动作动作的的承受者承受者。The tree was planted by The tree was planted by us.us.1.定义 表示表示“某人某人/事事此时此刻正在被此时此刻正在被”，主语主语是动作的是动作的承受者承受者,表表示示说话时或现阶段说话时或现阶段某个某个被动被动的动作正在进行。的动作正在进行。一、一、The Present Continuous Passive Voice 现在进行时被动语态现在进行时被动语态 They are being hunted,illegally,for their valuable fur.People ar

5、e hunting them,illegally,for their valuable fur.Activity 2:Focus on the form()Someone is hunting African elephant.by someone.African elephant is being hunted主语主语谓语谓语宾语宾语宾语宾语主语主语 谓语变被动谓语变被动 （时态不变）（时态不变）be+being+done+by2.主动语态变被动语态的原则“三变三变”原句主语原句主语 byby 短语短语宾语宾语 主语主语 谓语由主动谓语由主动 被动被动“三不变三不变”原句原句意思意思不变不变

6、 原句原句时态时态不变不变 原句主谓宾以外原句主谓宾以外成分成分不变不变2.主动语态变被动语态的原则（时态时态和和语态语态结合结合，先体现时态，后体现语态），先体现时态，后体现语态）现在进行时：现在进行时：am/is/are+V-ing被动语态被动语态：be+done(V过去分词)现在进行时的被动语态现在进行时的被动语态：主语+am/is/are+being+done+(by)表进行表进行表被动表被动二、二、现在进行时被动语态现在进行时被动语态3.结构(1 1)肯定形式：主语肯定形式：主语 +be(am/is/are)being doneThe house is being painted.(

7、2)(2)否定形式否定形式：主语：主语 +be(am/is/are)not being doneThe trees are not being watered.(3)(3)一般一般疑问形式疑问形式：be(Am/Is/Are)主语主语 being done？Am I being watched over?(4)(4)特殊疑问句形式特殊疑问句形式：特殊疑问词特殊疑问词 +be(am/is/are)+主语主语+being+done？3.基本结构When is the wall being painted?【即时演练【即时演练1】句型转换句型转换They are building a modern s

8、chool in his hometownA modern school _ in his hometown.(改为被改为被动语态动语态)A modern school _ in his hometown.(把句把句改为否定句改为否定句)_ in his hometown？(把句把句改为一改为一般疑问句般疑问句)_(对句对句就就in his hometown进行提问进行提问)Where is a modern school being built？Is a modern school being builtisnt being builtis being built1.Mary is bein

9、g interviewed now.2.Look!The baby is being taken care of by her aunt.3.The disease is being studied at present by scientist.4.基本用法：表示表示说话时说话时正在进行正在进行的被动动作的被动动作，句中常有，句中常有now,right now,at the moment,at present 等时间状语。等时间状语。三、三、现在进行时被动语态现在进行时被动语态 表示表示现阶段现阶段正在进行的被动动作。正在进行的被动动作。(说话时不说话时不一定在进行一定在进行)The pro

10、blem of food safety is being studied by scientists at present.表示一种表示一种经常性经常性的被动行为的被动行为,常与常与always,constantly,frequently 等词连用等词连用,往往往往带有带有赞扬、羡赞扬、羡慕、埋怨、讨厌慕、埋怨、讨厌等等感情色彩感情色彩。Children of our neighbors are always being praised by our parents.与某些与某些情态动词情态动词连用，表示连用，表示对正在发生的动作的对正在发生的动作的推测推测。As a result of st

11、aying up late talking last night,Jimmy may be being scolded by his headteacher.Activity3:Focus on the use Lets watch a short video and answer:What happened to the animals?From the video we can see:Human beings kill wild animals.Wild animals by human beings.At present,human race are destroying the en

12、vironment.At present,the environment by human race.is being destroyedare killedBesides,human beings are cutting down trees for house building.Trees by human beings for house building.are being cut downNowadays,some factories are polluting the river.Nowadays,the river by some factories.As a result,an

13、imals are losing their habitats.is being pollutedNow,wild animals (kill)by people,and also their fur (use)to make clothes for humans.are being killed表示现在、现阶段的词/短语有：now;at present(目前);these days(这些天来);recently(最近);at this moment(此时此刻)is being used Activity 4:Speech Presentation:Suppose that the Xiush

14、ui government is looking for a student to work as an image ambassador(形象大使)of wildlife conservation(保护).Please deliver a speech to raise peoples awareness(意识)of wildlife protection.Basic informations and shoesCurrent situation（现状）Protective measures(措施)：also named Chinese tiger first-class(一级)protec

15、tive animal one of the most endangered species only 20 survive in the wild.environment;destroy;human activitieshabitat;damage;peoplefood；reduce;people natural reserve(自然保护区);set up；government tiger products trading;ban(禁止);lawSouth China Tiger华南虎Basic informations and shoesCurrent situation（现状）Prote

16、ctive measures(措施)：mainly live in high mountains in Tibet The pride of HOL XiL(可可西里的骄傲)have lived on the earth for tens of millions of years every year over 20000 antelopes;hunt;hunters Their fur;use;to make clothes Their skin；cut;to make bags1)protection organization;establish；society2)illegal hunt

17、ing;punish;governmentTibetan Antelope藏羚羊 Good afternoon everyone.My name is xxx,and I am from group xx.I am here to give a speech about.xx.+(Basic information).Nowadays,something bad are being done to them.For example,Firstly,.Besides,.Whats worse .However,Much is being done to protect the animal.Fi

18、rst of all,.Whats more .All in all,I hope the animal can be well protected.Practice in your group,then share to the classActivity 5:Summary1.定义:现在进行时被动语态表示表示“某人某人/事事此时此刻正在被此时此刻正在被”，主语主语是动作的是动作的承受承受者者,表示表示说话时或现阶段说话时或现阶段某个某个被动被动的动作正在进行。的动作正在进行。2.主动语态变被动语态的原则“三变三变”:”:原句主语原句主语-by-by 短语短语;宾语宾语-主语主语;谓语由主动

19、谓语由主动-被动被动3.基本结构:(1 1)肯定形式：主语肯定形式：主语 +be(am/is/are)being done (2)(2)否定形式否定形式：主语：主语 +be(am/is/are)not being done (3)(3)一般一般疑问形式疑问形式：be(Am/Is/Are)主语主语 being done？(4)(4)特殊疑问句形式特殊疑问句形式：特殊疑问词特殊疑问词 +be(am/is/are)+主语主语+being+4.基本用法：表示表示说话时说话时正在进行正在进行的被动动作的被动动作，句中常有，句中常有now,right now,at the moment,at presen

20、t 等时间状语。等时间状语。表示表示现阶段现阶段正在进行的被动动作。正在进行的被动动作。(说话时不一定在进行说话时不一定在进行)表示一种表示一种经常性经常性的被动行为的被动行为,常与常与always,constantly,frequently 等词连用等词连用,往往往往带带有有赞扬、羡慕、埋怨、讨厌赞扬、羡慕、埋怨、讨厌等等感情色彩感情色彩。与某些与某些情态动词情态动词连用，表示连用，表示对正在发生的动作的对正在发生的动作的推测推测。Activity 6:Self-evaluation(自我评价自我评价)Self-evaluationPoint543211.I can master the f

21、orm present continuous tense2.I can have a good command of the rules of The Present Continuous Passive Voice3.I can figure out the link between active voice and passive voice.4.I can the usages of The Passive Voices of other tenses.5.I can be aware of the importance of protect the environmental protection Homework1.Finish the exercises on Learning Guide；2.Finish Ex.1-3on Page 18.Great efforts are being made to enable human and wildlife live in harmony.When the buying stops,the killing can too.